@article{PismaZhETF.13.507,
    title = {Physical States on Daughter Trajectories in the Dual Amplitude Under the Condition $\alpha(0)$ = 1.},
    author = {Kudryavtsev, V. A. and Levin, E. M.},
    journal = {Письма в ЖЭТФ},
    volume = {13},
    issue = {9},
    pages = {507},
    year = {1971},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_24323.shtml},
}